US6504112B1 - Analytical balance with wind guard - Google Patents

Analytical balance with wind guard Download PDF

Info

Publication number
US6504112B1
US6504112B1 US09/715,168 US71516800A US6504112B1 US 6504112 B1 US6504112 B1 US 6504112B1 US 71516800 A US71516800 A US 71516800A US 6504112 B1 US6504112 B1 US 6504112B1
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US
United States
Prior art keywords
analytical balance
balance according
sliding door
pane
sliding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US09/715,168
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English (en)
Inventor
Eberhard Luebke
Hans-Heinrich Koehne
Juergen Winkelbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sartorius Lab Instruments GmbH and Co KG
Original Assignee
Sartorius AG
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Filing date
Publication date
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Assigned to SARTORIUS AKTIENGESELLSCHAFT reassignment SARTORIUS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WINKELBACH, JUERGEN, KOEHNE, HANS-HEINRICH, LUEBKE, EBERHARD
Application granted granted Critical
Publication of US6504112B1 publication Critical patent/US6504112B1/en
Assigned to SARTORIUS WEIGHING TECHNOLOGY GMBH reassignment SARTORIUS WEIGHING TECHNOLOGY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SARTORIUS AG
Assigned to SARTORIUS LAB INSTRUMENTS GMBH & CO. KG reassignment SARTORIUS LAB INSTRUMENTS GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SARTORIUS WEIGING TECHNOLOGY GMBH
Assigned to SARTORIUS LAB INSTRUMENTS GMBH & CO. KG reassignment SARTORIUS LAB INSTRUMENTS GMBH & CO. KG CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNOR PREVIOUSLY RECORDED ON REEL 032251 FRAME 0147. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE INTEREST. Assignors: SARTORIUS WEIGHING TECHNOLOGY GMBH
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G21/00—Details of weighing apparatus
    • G01G21/28—Frames, Housings
    • G01G21/286—Frames, Housings with windshields

Definitions

  • the invention relates to an analytical balance having a balance housing, which includes a base area and a back structure, and a balance scale.
  • the analytical balance further includes a wind guard that encircles the balance scale and that has a base surface formed by the base area of the balance housing and a back wall formed by the back structure of the balance housing.
  • the analytical balance further includes a fixed front pane, two movable side panes, and a movable upper sliding door.
  • the movable wall elements can be opened and closed by hand or by motor.
  • a frameless front pane is fastened to a base area of a balance housing and, in addition, is held at its upper end by two guide rails.
  • the frameless front pane is connected to a back structure of the balance housing.
  • the two guide rails serve simultaneously as guides for the upper sliding door and for the side panes. This provides a very simple configuration for guiding an upper sliding door, as well as providing stability for the front pane.
  • the view of the goods being weighed is essentially unobstructed from both the front and the sides, and the fixed guide rails only obstruct the view and access from obliquely above.
  • the side panes and the upper sliding door should be moveable without affecting one another.
  • the view of the goods being weighed should be unobstructed from the front and the side, as well as from above and obliquely above.
  • access to the goods to be weighed, both from above and from the sides, should also be unobstructed.
  • an analytical balance including a balance housing having a base area and a back structure, a balance scale, and a wind guard encircling the balance scale.
  • the wind guard includes a base surface formed by the base area and a back wall formed by the back structure.
  • the wind guard further includes a fixed front pane, a right and a left movable side pane, and a movable upper sliding door.
  • the fixed front pane is implemented without a frame and is fastened to the base area of the balance housing.
  • the front pane is fastened only on the base area.
  • the right and left side panes are guided on the base area and are secured on the back structure.
  • the side panes are secured at the back structure only against tilting.
  • the upper sliding door is guided by at least one sliding guide on the back structure of the balance housing.
  • FIG. 1 shows a perspective view of the analytical balance, according to an embodiment of the invention
  • FIG. 2 shows a vertical cross-section through an affixed part of a round bar sliding guide, the affixed part being fastened to a balance housing of the analytical balance of FIG. 1;
  • FIG. 3 shows a vertical cross-section through a movable part of the round bar sliding guide
  • FIG. 4 shows a horizontal section through an exemplary embodiment of the front pane.
  • FIG. 1 shows an analytical balance, in perspective view, according to an embodiment of the present invention.
  • the analytical balance includes a base area 1 of the housing, a back structure 2 of the housing, a display and control part 3 affixed to the housing, a balance scale 4 , and a wind guard which encircles the balance scale on all sides.
  • the base of the wind guard is formed by the base area 1 of the housing.
  • the back wall of the wind guard is formed by the back structure 2 of the housing.
  • the front of the wind guard is formed by a stable, fixed, transparent front pane 5 , which is further indicated in FIG. 1 by its lateral edge 5 ′.
  • the two side doors 6 and 7 form the sides of the wind guard.
  • the left side door 6 is shown in an open position.
  • the upper movable sliding door 8 defines the upper enclosing portion of the wind guard.
  • the exemplary upper movable sliding door 8 illustrated in FIG. 1 is shaped like an upper lid of a case.
  • FIG. 1 A guide for the upper sliding door 8 can be seen partially in FIG. 1 .
  • FIG. 2 shows a vertical cross-section through an affixed part 10 of the guide that is fastened to the balance housing.
  • FIG. 3 a vertical cross-section through a movable round bar 11 of the guide is shown in FIG. 3 .
  • the affixed part 10 of a round bar sliding guide is fastened to the balance housing and defines a cylindrical interior space (hollow space) 12 .
  • a C-shaped plastic sliding liner 13 is attached along a front end of the interior space 12 , as shown in FIG. 1 . This sliding liner 13 permits sliding movement of the round bar 11 .
  • the round bar 11 is left out of FIG. 2 and is illustrated separately in FIG. 3 .
  • the round bar 11 transitions laterally into a stay 14 , to which the lateral area 8 ′ of the upper sliding door 8 is fastened.
  • a sliding cover 15 is fixedly connected to the round bar 11 .
  • the sliding cover 15 In the closed position of the upper sliding door 8 depicted in FIG. 1, the sliding cover 15 is located just behind the sliding liner 13 of the affixed part 10 that is fastened to the balance housing.
  • the sliding cover 15 On opening the upper sliding door 8 , the sliding cover 15 moves with the round bar 11 , and the distance between the sliding liner 13 and cover 15 increases. Thereby, the load on the sliding liner and cover decreases.
  • the round bar sliding guide of the present invention has low space requirements and uses parts that can be produced simply.
  • the movable round bar 11 advantageously includes an outer, slotted metal pipe 11 ′′ and an inner plastic core 11 ′′′.
  • the plastic core 11 ′′′ leads into the lateral stay 14 , which also is formed of plastic.
  • the slotted metal pipe 11 ′′ is simply slid onto the plastic core 11 ′′′.
  • the metal pipe 11 ′′ can be formed of steel or aluminum, for example.
  • the aluminum embodiment can, for example, be produced by an extrusion process. The desired surface hardness and sliding characteristics are then achieved, for this exemplary embodiment, by a special surface heat treatment.
  • FIG. 3 shows a rack 17 that is connected to the movable round bar 11 of the round bar sliding guide.
  • the rack 17 engages with a pinion of an electric motor that is housed in the back structure 2 of the balance housing, thereby permitting motorized movement of the upper sliding door.
  • one of the operator keys 9 on the display and control part 3 can be used to control the motor.
  • Tolerances between the right round bar sliding guide 10 / 11 and the movable bar 11 ′ of the left round bar sliding guide are compensated by the elasticity of the sliding door 8 , especially by its case-like form.
  • the sliding door 8 can be supported on the other side, for example, by the two overlaid surfaces sliding on one another.
  • a slot 18 is included laterally on the affixed part 10 , of the round bar sliding guide, that is fastened to the balance housing, as shown in FIG. 2.
  • a hook on the side pane 7 projects into the slot 18 .
  • the slot-like guide 18 is disposed on the affixed part 10 , of the round bar sliding guide, that is fastened to the balance housing, the slot therefore is also affixed to the balance housing.
  • the movable round bar 11 of the round bar sliding guide is not configured to guide the side panes 6 and 7 .
  • the side panes 6 , 7 do not provide a guide for the upper sliding door 8 . Accordingly, the upper sliding door is not coupled to either of the side panes via frictional effects.
  • FIG. 4 A section of an advantageous embodiment of a front panel is shown in FIG. 4 .
  • the front pane 5 includes outer and inner panes (for example, glass panes) 5 ′′ and 5 ′′′, respectively, that are connected to one another via an adhesive layer 20 .
  • the inner pane 5 ′′′ is somewhat smaller in width than the outer pane 5 ′′, creating a step, as illustrated in FIG. 4 .
  • the respective side pane 6 or 7 fits snugly into the step, thereby forming a labyrinth seal 21 / 22 . In this manner, the interior of the weighing space is protected from drafts of air, even without the use of special elastic seals.
  • the front of the balance scale is particularly well shielded from the operator's breath because an outer slot 21 of the labyrinth seal lies exactly transverse to the direction of the draft of the operator's breathing.
  • This preferred double-pane configuration permits omission of an encircling frame with seals, ensuring an open view of the goods being weighed, without affecting its function as wind guard.
  • the front pane 5 can be configured as a safety glass panel, due to the adhesive layer 20 between the two panes 5 ′′ and 5 ′′′, which configuration is advantageous for certain applications.
  • special surface coatings such as reflective layers for the radiation of heat, can be used in the bond between the two glass panes 5 ′′ and 5 ′′′. Because such special surface coatings are less durable, they thus are not favorably used on the outer surfaces of the panes.
  • durability is not critical, and thus these sensitive layers can be used without additional measures.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wing Frames And Configurations (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Window Of Vehicle (AREA)
  • Adjustment And Processing Of Grains (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
US09/715,168 1999-11-19 2000-11-20 Analytical balance with wind guard Expired - Fee Related US6504112B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19961748A DE19961748C1 (de) 1999-11-19 1999-11-19 Analysenwaage mit Windschutz
DE19961748 1999-11-19

Publications (1)

Publication Number Publication Date
US6504112B1 true US6504112B1 (en) 2003-01-07

Family

ID=7933638

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/715,168 Expired - Fee Related US6504112B1 (en) 1999-11-19 2000-11-20 Analytical balance with wind guard

Country Status (5)

Country Link
US (1) US6504112B1 (de)
EP (1) EP1102045B1 (de)
JP (1) JP3400785B2 (de)
CN (1) CN1144028C (de)
DE (3) DE19961748C1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713690B2 (en) * 2000-03-02 2004-03-30 Sartorius Aktiengesellschaft Analytical balance having a connecting part between the housing and the display and operating unit
US20060021454A1 (en) * 2004-07-27 2006-02-02 Rasmussen Patricia E Buoyancy-corrected gravimetric analysis system
US20060185909A1 (en) * 2005-02-18 2006-08-24 Neil Olesen Draft protection device for a balance
US20070012488A1 (en) * 2005-02-18 2007-01-18 Neil Olesen Draft protection device for a balance and having a friction reduction device
US20090008159A1 (en) * 2007-07-03 2009-01-08 Seiko Epson Corporation Weight measurement device, droplet discharge device, and weight measurement method
US20100276213A1 (en) * 2007-11-19 2010-11-04 Mettler-Toledo Ag Laboratory instrument with a protected working compartment
WO2014038969A1 (en) 2012-09-10 2014-03-13 Lewandowski Witold Automatic door opening mechanism of an analytical balance's weighing chamber
US20150107912A1 (en) * 2012-05-25 2015-04-23 Witold Lewandowski Weighing chamber of an analytical balance
US9115534B2 (en) * 2011-12-14 2015-08-25 Sartorius Lab Instruments Gmbh & Co. Kg Mounting for a side panel of a weighing machine, assembly for a windshield of a weighing machine, and method for removing a side panel of such an assembly
US20180136034A1 (en) * 2015-03-15 2018-05-17 Waldner Ag Weighing Take-Off
US20180161834A1 (en) * 2015-03-15 2018-06-14 Waldner Ag Weighing Fume Cupboard
EP3557200A1 (de) 2018-04-17 2019-10-23 Mettler-Toledo GmbH Laborwaage mit motorisiertem windschutz

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10214954C1 (de) * 2002-04-04 2003-09-04 Mettler Toledo Gmbh Waage mit Windschutz
EP1367372B1 (de) * 2002-05-29 2005-11-23 Mettler-Toledo GmbH Windschutzvorrichtung für eine Waage und Waage mit Windschutz
JP2004219314A (ja) * 2003-01-16 2004-08-05 Shinko Denshi Kk はかりの風防装置
DE202007016933U1 (de) 2007-12-04 2008-10-09 Sartorius Ag Waage mit Windschutz
CN103196535B (zh) * 2013-03-29 2014-12-24 杭州福斯达实业集团有限公司 称重仪表
PL3557199T3 (pl) * 2018-04-17 2021-05-31 Mettler-Toledo Gmbh Waga laboratoryjna z tylną ścianą komory ważenia o konstrukcji modułowej

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775905A (en) * 1971-11-12 1973-12-04 Frank Gmbh Wilh Closure arrangement for a window or door opening employing a slidable and tiltable panel
US4664207A (en) 1985-03-13 1987-05-12 Sartorius Gmbh Balance with a protective box-like structure
US4666005A (en) * 1985-02-25 1987-05-19 Shimadzu Corporation Electronic balance
US4700793A (en) 1986-02-28 1987-10-20 Mettler Instrumente Ag Precision balance
DE3936583A1 (de) * 1989-11-03 1991-05-08 Schock Metallwerk Auszug
US5058692A (en) * 1989-06-19 1991-10-22 Sartorius Ag Balance with motor-driven wind guard
US5072838A (en) * 1989-04-26 1991-12-17 Engineered Data Products, Inc. Tape cartridge storage system
US5170855A (en) * 1991-02-01 1992-12-15 Mettler-Toldedo AG Draft protection device for a precision balance
US5647094A (en) * 1995-08-30 1997-07-15 Excel Industries Sliding member for regulator assembly
US5771534A (en) * 1995-08-11 1998-06-30 Consolidated Industrial Corporation Slider block assembly for a vehicle window
US5874694A (en) * 1994-11-09 1999-02-23 Mettler-Toledo Gmbh Weighing apparatus including wind screen means
US6148451A (en) * 1999-04-14 2000-11-21 Kohler Co. Shower door attachment assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775905A (en) * 1971-11-12 1973-12-04 Frank Gmbh Wilh Closure arrangement for a window or door opening employing a slidable and tiltable panel
US4666005A (en) * 1985-02-25 1987-05-19 Shimadzu Corporation Electronic balance
US4664207A (en) 1985-03-13 1987-05-12 Sartorius Gmbh Balance with a protective box-like structure
US4700793A (en) 1986-02-28 1987-10-20 Mettler Instrumente Ag Precision balance
US5072838A (en) * 1989-04-26 1991-12-17 Engineered Data Products, Inc. Tape cartridge storage system
US5058692A (en) * 1989-06-19 1991-10-22 Sartorius Ag Balance with motor-driven wind guard
DE3936583A1 (de) * 1989-11-03 1991-05-08 Schock Metallwerk Auszug
US5170855A (en) * 1991-02-01 1992-12-15 Mettler-Toldedo AG Draft protection device for a precision balance
US5874694A (en) * 1994-11-09 1999-02-23 Mettler-Toledo Gmbh Weighing apparatus including wind screen means
US5771534A (en) * 1995-08-11 1998-06-30 Consolidated Industrial Corporation Slider block assembly for a vehicle window
US5647094A (en) * 1995-08-30 1997-07-15 Excel Industries Sliding member for regulator assembly
US6148451A (en) * 1999-04-14 2000-11-21 Kohler Co. Shower door attachment assembly

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6713690B2 (en) * 2000-03-02 2004-03-30 Sartorius Aktiengesellschaft Analytical balance having a connecting part between the housing and the display and operating unit
US20060021454A1 (en) * 2004-07-27 2006-02-02 Rasmussen Patricia E Buoyancy-corrected gravimetric analysis system
US7357045B2 (en) 2004-07-27 2008-04-15 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Health Buoyancy-corrected gravimetric analysis system
US7923648B2 (en) 2005-02-18 2011-04-12 Ohaus Corporation Usa Draft protection device for a balance and having a friction reduction device
US20060185909A1 (en) * 2005-02-18 2006-08-24 Neil Olesen Draft protection device for a balance
US20070012488A1 (en) * 2005-02-18 2007-01-18 Neil Olesen Draft protection device for a balance and having a friction reduction device
US7193164B2 (en) * 2005-02-18 2007-03-20 Ohaus Corporation Usa Draft protection for a scale with side panels that slide through groves of both the hinged flip top and a partial front rear top frame
US7732720B2 (en) * 2005-02-18 2010-06-08 Ohaus Corporation Usa Draft protection device for a balance and having a friction reduction device
US20100236840A1 (en) * 2005-02-18 2010-09-23 Ohaus Corporation Usa Draft protection device for a balance and having a friction reduction device
US20090008159A1 (en) * 2007-07-03 2009-01-08 Seiko Epson Corporation Weight measurement device, droplet discharge device, and weight measurement method
US7893368B2 (en) * 2007-07-03 2011-02-22 Seiko Epson Corporation Weight measurement device, droplet discharge device, and weight measurement method
US20110100725A1 (en) * 2007-07-03 2011-05-05 Seiko Epson Corporation Droplet discharge device
US8816224B2 (en) 2007-07-03 2014-08-26 Seiko Epson Corporation Droplet discharge device including weight measurement device
US7834278B1 (en) 2007-11-19 2010-11-16 Mettler-Toledo Ag Laboratory instrument with a protected working compartment
US20100276213A1 (en) * 2007-11-19 2010-11-04 Mettler-Toledo Ag Laboratory instrument with a protected working compartment
US9115534B2 (en) * 2011-12-14 2015-08-25 Sartorius Lab Instruments Gmbh & Co. Kg Mounting for a side panel of a weighing machine, assembly for a windshield of a weighing machine, and method for removing a side panel of such an assembly
US20150107912A1 (en) * 2012-05-25 2015-04-23 Witold Lewandowski Weighing chamber of an analytical balance
US9719844B2 (en) * 2012-05-25 2017-08-01 Radwag Wagi Elektroniczne Witold Lewandowski Analytical balance with a weighing chamber having structure operating as a locking mechanism due to unique method of assembling and disassembiling components of the chamber
US20150204716A1 (en) * 2012-09-10 2015-07-23 Radwag Wagi Elektroniczne Witold Lewandowski Automatic door opening mechanism of an analytical balance's weighing chamber
WO2014038969A1 (en) 2012-09-10 2014-03-13 Lewandowski Witold Automatic door opening mechanism of an analytical balance's weighing chamber
US20180136034A1 (en) * 2015-03-15 2018-05-17 Waldner Ag Weighing Take-Off
US20180161834A1 (en) * 2015-03-15 2018-06-14 Waldner Ag Weighing Fume Cupboard
EP3557200A1 (de) 2018-04-17 2019-10-23 Mettler-Toledo GmbH Laborwaage mit motorisiertem windschutz
US11002592B2 (en) 2018-04-17 2021-05-11 Mettler-Toledo Gmbh Laboratory balance with a motorized draft shield

Also Published As

Publication number Publication date
CN1297142A (zh) 2001-05-30
DE19961748C1 (de) 2001-04-05
EP1102045B1 (de) 2005-11-09
DE20018311U1 (de) 2001-04-26
JP2001174319A (ja) 2001-06-29
EP1102045A3 (de) 2002-03-06
EP1102045A2 (de) 2001-05-23
CN1144028C (zh) 2004-03-31
JP3400785B2 (ja) 2003-04-28
DE50011555D1 (de) 2005-12-15

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